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Increasing order of ionic size : N^(3-...

Increasing order of ionic size :
`N^(3-),Na^(+),F^(-),O^(2-),Mg^(2+)`

A

`O^(2-) lt F^(-) lt Na^(+) lt Al^(3+)`

B

`Al^(3+) lt Na^(+) lt F^(-) lt O^(2-)`

C

`O^(2-) lt Na^(+) lt F^(-) lt Al^(3+)`

D

`Al^(3+) lt F^(-) lt Na^(+) lt O^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
B
Among isoelectronic ions, anions will be larger in size than cations. For such species, the size decreases with increase in atomic number.
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